Casado 20

0.45 UTI

0.0

C_N

1.0

C_dens

0.5

C_C3

0.38

C_lit

1.0

C_dup

C3 classification BB

Number of members (P>50%) 22

Radius (P>50% members) 2.9 [arcmin]

C_N 0.0 Sparse
C_dens 1.0 Very dense
C_C3 0.5 Intermediate quality
C_lit 0.38 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

ℹ️

Casado 20 is a sparse, very dense object of intermediate C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is poorly studied in the literature.

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

Relatively close Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Casado 20 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	348.059	56.816	0.519	-3.292	-2.669	–
Hu & Soubiran	2025	348.057	56.798	–	–	–	–
Zhang et al.	2024	348.06	56.818	–	–	–	–
Hunt & Reffert	2024	348.06	56.818	0.517	-3.283	-2.675	–
Cavallo et al.	2024	348.057	56.798	0.516	–	–	–
Hunt & Reffert	2023	348.06	56.818	0.517	-3.283	-2.675	–
Casado	2021	348.043	56.826	0.52	-3.3	-2.6	–

💡 Note: The UCC values are estimated from its identified members.

Reference	Year	Dist [kpc]	Av [mag]	DAv [mag]	Age [Myr]	[Fe/H] [dex]	Mass [Msun]	Bfr	BSS
Hu & Soubiran	2025	–	–	–	–	-0.040*	–	–	–
Zhang et al.	2024	–	–	–	–	-0.498*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	96*	–	–
Cavallo et al.	2024	1.85	0.91	–	646	0.160	–	–	–
Hunt & Reffert	2023	1.85	1.01	0.62	347	–	–	–	–
Casado	2021	1.80	–	–	–	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0199	92.0	348.06	56.82	0.51	-3.28	-2.68	–	0.03

💡 Note: The % column shows the percentage of members that Casado 20 shares with each listed object.

Visualization

ℹ️

1 2